In recent years, biomass fuel has been valued by the industry, and drying has become the first process of utilizing sawdust resources. It is also a booster for energy utilization and energy conservation and emission reduction. However, the sawdust dryer in the market generally has a phenomenon of excessive heat loss. In the long run, it will lead to an increase in the investment cost of the enterprise, which is not conducive to the realization of energy-saving goals.How to reduce the excessive heat loss of sawdust drying has become the focus of research and development. In the efforts of technicians and many test machines, we have found a way.
1. Reduce the initial moisture content of sawdust
Under the same heating condition, the material with large moisture content is slow to dry, and the more heat needed in the drying process, it will inevitably increase the heat loss of the equipment, and reduce the initial moisture content of the sawdust to prevent heat loss during the sawdust drying process. Large preconditions, specifically dehydration work.
2. Reasonably control the speed of the wood chips dryer
In order to increase the output, some users will increase the speed of the sawdust dryer privately. Not only will the effect not be achieved, but also the wave of thermal energy resources. The speed will be too fast, the speed of the drying cylinder will be faster, the thermal efficiency will be reduced, and the heat will be lost. According to the actual situation, the cylinder speed is designed to avoid excessive heat loss.
3. Strengthen the sealing and heat preservation of pipes and cylinders
During the drying process, if the pipeline leaks or the drying performance of the drying cylinder is not good, the cylinder has cracks, etc., the heat loss will be too large, and the sawdust will not reach the drying effect, which not only causes waste of resources, but also affects the quality of sawdust drying. Ensuring the insulation of pipes and cylinders is also an important measure to prevent excessive heat loss.